据报道,在无金属条件下,活化和未活化烯烃的高位点选择性三氟甲基氨基氧基化。该方法可直接获得多种 β-三氟甲基三取代羟胺、叔醇、异恶唑啉、异恶唑烷和氨基醇。羟胺和高价碘-CF 3试剂之间的 SET 过程被提议产生两个自由基,用于烯烃的区域选择性和非对映选择性加成。该协议的合成潜力是通过产品的后期功能化和一系列反应后修改建立的。
据报道,在无金属条件下,活化和未活化烯烃的高位点选择性三氟甲基氨基氧基化。该方法可直接获得多种 β-三氟甲基三取代羟胺、叔醇、异恶唑啉、异恶唑烷和氨基醇。羟胺和高价碘-CF 3试剂之间的 SET 过程被提议产生两个自由基,用于烯烃的区域选择性和非对映选择性加成。该协议的合成潜力是通过产品的后期功能化和一系列反应后修改建立的。
A mild and efficient copper-catalyzed trifluoromethylation reaction which involves the cyclization of oximes has been developed. This method provides a convenient access to a variety of useful CF3-containing 4,5-dihydroisoxazoles by constructing a C–CF3 bond and a C–O bond in one step.
Mediator-free electrochemical trifluoromethylation: a cascade approach for the synthesis of trifluoromethylated isoxazolines
作者:Kingshuk Mahanty、Suman Kumar Saha、Atreyee Halder、Suman De Sarkar
DOI:10.1039/d3cc00231d
日期:——
CF3-radical generation, followed by cascade cyclization fabricating an isoxazoline scaffold from a β,γ-unsaturated oxime. Consecutive C–O and C–C bond formations were achieved through this method featuring mild, robust, and scalable reaction conditions and broad substrate scope. Mechanisticstudies revealed the necessity of anodic oxidation for the cascade process. Further conversion of the isoxazoline afforded